Year	Percent change
1980	10.784
1981	11.563
1982	1.253
1983	-1.029
1984	0.093
1985	1.977
1986	-23.611
1987	-23.997
1988	-1.42
1989	23.733
1990	97.622
1991	-21.429
1992	5.959
1993	-5.881
1994	5.274
1995	3.014
1996	-15.93
1997	0.138
1998	7.111
1999	-0.454
2000	26.651
2001	4.383
2002	23.464
2003	-9.136
2004	21.906
2005	6.292
2006	-8.77
2007	14.785
2008	34.873
2009	12.357
2010	-1.781
2011	5.469
2012	13.432
2013	8.972
2014	9.143
2015	-7.602
2016	-1.898
2017	-1.372
2018	-5.992
2019	8.646
2020	-8.103
2021	-3.557
2022	-8.648
2023	-6.904
2024	-5.206